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How to read diagnostic information in Proworx Nxt.

Diagnostic information can be read by configuring STAT instruction in Proworx Nxt.
The STAT instruction accesses a specified number of words in a status table in the PLC’s system memory. Here vital diagnostic information regarding the health of the PLC and its remote I/O drops is posted.
This information includes:

PLC status

Possible error conditions in the I/O modules

Input-to-PLC-to-output communication status

Refer the attached document for various word table and its description.